Backend Engineer (.NET)

About the role

EHMA builds the software behind Everpower’s family of products. This is a broad role for an experienced backend engineer supporting multiple applications across our portfolio — from the high-volume APIs, third-party integrations, and data behind our B2B platform to a new battery and device fleet-management system. You’ll bring depth the current team can lean on, and work across our backend on a small, fast-moving team.

What you'll do

• Build and maintain backend services and third-party integrations for our high-volume B2B platform — payments/financing, e-signature, CRM/ERP, and partner APIs.

• Build resilient, idempotent integration flows — queues, webhooks, retries, and reconciliation — and keep business-critical data correct and auditable.

• Help design and build our battery and device fleet-management platform — provisioning, over-the-air updates, remote configuration, monitoring, and telemetry at scale.

• Build and operate connected-device / IoT data pipelines (device and battery telemetry).

• Contribute to reliability and quality — automated tests, observability, and safe releases.

Where you’ll make an impact early

• Adding much-needed capacity to our core B2B platform and its integrations.

• Helping stand up the battery and device fleet-management backend.

What we're looking for

• Several years of professional backend engineering with C#/.NET (ASP.NET Core) and Azure — enough depth to own designs, set patterns, and work independently.

• Proven experience designing and operating third-party integrations and data pipelines at scale — queues / Service Bus, webhooks, retries, reconciliation, idempotency.

• Experience with a document database (MongoDB / Cosmos DB) and a strong sense for data correctness and integrity.

• Hands-on IoT / connected-device or fleet experience — ideally the Microsoft IoT stack (Azure IoT Hub, Device Provisioning Service, IoT Edge, Azure Digital Twins, or similar).

• A quality mindset: tested, maintainable code and attention to reliability.

Nice to have

• Payments, lending/financing, or e-signature integrations (Box Sign, DocuSign).

• Battery management, energy systems, or embedded/hardware-adjacent experience.

• Time-series / telemetry data at scale.

• Observability with Application Insights / Azure Monitor / Log Analytics (KQL).

• • iPaaS / integration middleware (Celigo / integrator.io or similar).

Team: EHMA — the technology arm of Everpower

Reports to: Director of Engineering

Location: Tempe, AZ — Onsite (No Remote, no hybrid, no WFH).

Type: Full-time

Compensation: $120,000–$140,000 base, depending on experience, plus benefits